Boiler



G. COOK BOILER 5 Sheets-$heet .L

Filed March l920 HGT. d...

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INVENTCR I I v ATTORNEY Jan. 6. 1925.

G. COOK BOILER F le March 1920 3 Sheets-Sheet 2 INVENTO R 660/76 600A WITNESSES ATTORNEY G. COOK Jan. 6. 1925.

BOILER F le March 1920 3 Sheets-Sheet 3 WITNESSES ATT'O R N EY Patented Jan. 6, 1925.

GEORGE COOK, OF BUFFALO, NEVT YORK.

BOILER.

Application filed. March '17, 1920.

To all whom it may concern:

Be it known that I, Gnonon Coon, a citi Zen of the United States residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Boiler, of which the following is a specification,

This invention relates to boilers of upright type which are provided with water tubes.

The general object of the invention is to provide an improved boiler construction and one which insures rapid heating of the water and the delivery of dry steam to the engine.

Another object is to provide a boiler which may be readily assembled or dis mantled.

A further object is to provide a boiler whose parts are readily cleaned.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming part of this specification, with the understanding, however that the invention is not confined to any strict conformity with the showing in the drawings, but may be changed and modified so long as such changes and modifications mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings,

Pg. 1 is an elevation of an embodiment of the invention.

Fig. 2 is a vertical section of the same.

Fig. 3 is a horizontal section of the same.

Fig. 4 is a detail, showing the manner in which the inner shell and the plate covering the opening in the outer shell are secured together.

Fig. is a detail, showing the means for holding the cupped fittings to the upper ends of the tubes.

Fig 6 is a plan view of one of the fittings.

The numeral 10 represents the outer shell of the improved boiler, which shell. as shown in Fig. 3, is substantially square in cross section having rounded corners. The upper end of the shell 10 has an annular top plate 11 secured thereto with a circular flange 12. A steam dome, including a cylindrical wall 13 and a top plate 14-, is se- Serial No. 366,481.

cured to the annular plate 11 by means passing through the flange 12. The top plate 14 of the steam dome has an annular flange 15 and a flue 16 passes through the top plate 14, being secured to the steam dome by means of elements running through the annular flange 15.

The lower end of the outer shell 10 has a base plate 17 secured thereto and to the inner shell of the boiler, the inner and outer shells and the plates 11 and 1? forming a water compartment of the boiler. A plate 18 provides an ash pit at the lower end of the inner shell and has an opening 19 which may be closed by the usual form of door.

A collar 20 is secured to the inner and outer shells of the boiler by means of flanges 2O (see F 1g. 2). This collar provides apassageway for the fuel and the opening is closed by the usual type of fire door shown).

Access may be had to the water compart- (not 'ment of the boiler for cleaning by means of hand holes of the usual type closed by caps 21 or the like (see Fig. 1). Such holes are provided near the bottom of the water compartment and pass through the outer shell of the boiler. In order to get at the water tubes, which are carried by the in nor shell of the boiler, the outer shell. is provided with a number of openings 22. there being one opening for each side of the outer shell. These openings have an area slightly less than the area of that portion of the inner shell defined by the tube ends. The relative position of one of the passageways 22 and the tube ends is indicated in dotted lines in Fig. 2. These pas:- sageways 22 are normally'closed by plates 23, studs 21 holding the plates upon the outer face of the shell 10. The outer shell is provided with. an edging 26 which runs about the perimeter of the plate 23, and a packing is interposed between the plate 23 and the shell. This packing is held and prevented from bulging outwardly by means of the edging 26. This arrangement of the edging and packing makes a watertight joint where the plates are connected to the outer shell and yet permits ready removal of the plates when the tubes are to be cleaned.

Stay bolts 13 connect the inner shell with screw threaded collars or sleeves 44. The outer ends of thebolts 43 have heads which engage with the sleeves 44, and caps 45 are threaded upon those portions of the sleeves 44 which extend without the plates23. A construction similar to this has been described in my co-pending application Serial No. 241,591.

The inner and outer shells of the boiler may bebraced by additional stay bolts 42 of conventional form, or these additional stay bolts may besimilar to the bolts 43 already described. .The outer shell is preferably braced at the corners by elements 27 and 28, as seen in Fig. 2.

Secured within the steam dome by the same elements 23 which hold the steam dome upon the upper end offthe boiler is a battle 30, including a cylindrical wall, which is spaced from the walls of the flue. and ot the dome-and a lower annular wall 31 which,

,with the walls 30 and 13, forms a steam "compartment 32. The upper end of the bai 'flef30vis spaced from the top plate 14 of the steam dome, as shown. The steam battle, the dome and the flue are coaxial with each other. The wall 13 of the dome is provided with a number oi openings near its lower end, which openings are closed by the plugs The purpose of theseplugs is to permit ready cleaning of the steam compartment A pipe line 32 provided with a valve, 1

is connectedto the steam compartment and provides means by which the same may be drained at desired intervals.

A pipe 34 is connected with the steam space by means of a suitable fitting, a valve 35 being provided so that the flow of steam through said pipe may be cut of? when de tail connection 52 and hold "the fittings sesired. Another pipe 36 is secured to the same fitting andis in turn provided with a valve 37. In orderto distinguish between these two pipes, the pipe 34 will here be referred to as a main steam line anc the pipe 36 as the emergency steam line. It will be clear that if there is anything wrong with the main steam line, by closing the valve 35, the emergency steam line may be employed.

The main steam line. passes upwardly lromits connection with the steam dome and is run'into the flue 16, where it is formed into one ormore coils 38 comprising. a superheater extending longitudinally of the flue.

At the lower end otthese coils a pipe 39 01" smaller dimensions than the pipe of the main steam line is connected. This pipe 39 passesupwardly through thefiue and out through thewall of the same, being provided outside of the flue with a valve 40. This pipe 39 constitutes a blow-oil pipe by means of which water accumulated in the coil 38 may be blown oil, thus insuring dry steam.

The main steam line continues outwardly through the wall of the line and onto the engine, as indicated at 38.

The inner shell 41 of the boiler has a cross section similar to that of the outer shell and carries a plurality of rows of water tubes 46, 47, 48, 49. The tubes of each row incline upwardlyand slant out of vertical plane. Tie tubes are connected with the two opposite faces of the square inner shell, adjacent rows, as 48 and 49, being connected with separate faces and thus crossing each other. The tubes of every second row, as 47 and 49, are inclined with respect to vertical planes in different directions so as to cross each other also. The tube ends of every second row are staggered with respect to each other as seen in Fig. 2. There the tubes or the row 47 are shown inclining toward the back and slanting to the left, while the tubes oi row 47 slant upwardly but incline to the right. The rows 46 and 48 are placed in a similar relation.

In order to insure more rapid circulation of the water in the tubes than the upward incline of the tubes would cause, fittings 50, comprising cup-lilac elements, are secured to the upper ends ot each of the tubes. These tittingsgive a pronounced circulation to the water as it leaves the tubes and. enters the \v'aterspace between the shells. For clearness in illustration, only a' few oi the tubes of the boiler have been shown as provided with these cup fittings 50. It will be understood that the upper ends or all or the tubes are to have these cup fittings mounted tiereon. As seen in Figs. 5 and 6, a dovetail element 52 is provided upon the outer end of each tube and provides means by which the cup fittings may be removably ,held upon the tubes. The cup fittings have tongues 51 adapted to slide upon thedovecurely in place, though permitting of ready removal when the tubes are to be cleaned.

The arrangement of the water tubes and the disposition of the accelerating means on the upper ends of each tube are in staggered relation, and the accelerating means on the ends or each tube of alternate rows provides a construction whereby fluid emanating from the tubes of one row may travel perienced, but in the present device, since the various streams 0t fluids of difierent temperatures are caused to travel in parallel in parallel relation to the streams of fluid relation for a portion of their upward movement and then gradually mix, the resistance of the flow of fluid in the boiler will be greatly diminished.

In the present boiler extraordinary provision has been made for insuring a supply of dry steam. Futhermore, means are provided whereby all parts of the boiler may be reached for cleaning. The relatively small size of the openings 22 saves boiler plate and adds to the strength of the boiler. As the dotted lines of Fig. 2 indicate, when cleaning the boiler tubes not all of the same can be reached from one side of the boiler. In order to clean two rows, such as rows 47 and 49, one may run the boiler tube cleaner through all the tubes except the extreme right-hand tube of row 49 and through all the tubesof row 4-7 except the extreme left-hand tube. These two tubes, because of their inclination, the one to the left and the other to the right, are readily cleaned from the opposite side of the boiler. If the boiler shells were cylindrical, as is common, tubes arranged like those which have been described could not be employed. The square shape of the inner shell permits of ready removal of the tubes when desired and gives a large area exposed to the hot gases and flames of the flre. I desire to use any size and number of tubes in the inner shell which may seem desirable and any number of rows of such tubes. The boiler is a strong one, is readily assembled or dismantled and the parts thereof may be easily removed for repair. The edging does not siderably strengthens the boiler plate of the outer shell where it is cut away, besides helping to secure the plate which covers the cutaway section.

What is claimed is:

1. An upright boiler of the water-tube type comprising an outer shell, an inner shell having a fire box therein, a flue con nected to the top of the inner shell, a steam dome on the top of the outer shell surrounding the flue, a baifle coaxially mounted in the steam dome having an integral flange presenting a downwardly bent portionadjacent to the lower edge of said dome, and means to secure said flange and the lower edge of said dome to said outer shell, whereby said integral flange forms the bottom of the steam space between said balfle and said dome.

2. In an upright boiler, an outer shell, an inner shell, a flue connected to the top of the inner shell and leading upwardly, a steam dome made fastto the top of the outer shell, the flue passing through the top of the dome, a cylindrical bafiie in the dome and coaxial with both the flue and the dome, said cylindrical baflle being connected with the dome where it is joined to the outer shell, the same elements being used to unite the three named parts.

In testimony, that I claim the foregoing as my own, I have hereto afl ixed my signa ture.

GEORGE COOK. 

